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Raveling of Asphaltic Mixes Due to Water Damage: Computational Identification of Controlling Parameters.
| 题名： | Raveling of Asphaltic Mixes Due to Water Damage: Computational Identification of Controlling Parameters. |
| 作者： | Kringos-N; Scarpas-A |
| 关键词： | Bonding-; Interlayers-Pavements; Shear-stress; Shear-tests; Tack-coats; Testing-equipment |
| 摘要： | The performance of multilayered pavement systems depends strongly on interlayer bonding. To guarantee good bonding, tack coats (also called bond coats) are usually applied at various interfaces during pavement construction or overlay. The effectiveness of the tack coat can be assessed with the use of several devices arranged by different laboratories to evaluate interlayer shear resistance. This paper shows how interlayer shear resistance may be evaluated through the Ancona shear testing research and analysis (ASTRA) device. ASTRA results, expressed in units of maximum interlayer shear stress (-鋚eak), highlight the effects of various influence parameters such as type of interface treatment, curing time, procedure of specimen preparation, temperature, and applied normal load. Moreover, this paper compares the -鋚eak results obtained by two different shear test devices: the ASTRA tester designed and developed in the Polytechnic University of Marche (Italy) and the layer-parallel direct shear tester created by the Swiss Federal Laboratories for Materials Testing and Research. The two test methods provide different but comparable results showing the same ranking of shear resistance for different interface treatments. |
| 总页数： | Transportation Research Record: Journal of the Transportation Research Board. 2005. (1929) pp69-78 (8 Fig., 4 Tab., 21 Ref.) |
| 报告类型： | 科技报告 |
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